sure it will make more power,but youve got to make sure your cam will support the added compression,as far as heat goes,once again if your cam isnt right for the added compression,yes it`ll run hotter (make sure your tune is right too)

the build is a 107 575 mackey cam248 lift 248 duration revolution heads flowed an decked v&h power dualls with monster ovalls revoltion perf. fuel mang. 10to1 pistons power 91hp102tq not enough iwas going to put 30thous head gasket that would drop dn to 10.2to1 should help some an putting a 58mm tb on it also